CloudMade/Leaflet — pull request #459 by mortenbekditlevsen (2012-02-03 07:28:20+00:00)
Title: 'redraw' method for TileLayer.Canvas

In case your canvas content is not entirely static, it can be very handy with a 'redraw' method that updates the tile contents. This idea could be further expanded to something like redrawInBounds(/*Bounds*/) where only the affected tiles are redrawn.